Am I overthinking

Sooo Im probably just overthinking

I’m a virgin, never had sex, never even touched a tampon. I was making out with a guy the other day, in the shower he came on my back and ass but his dick was pressed against me not in me at all my legs were closed most of the time, and my period is 4 days late. I have lots of cramps, acne and bloating, There’s no chance of pregnancy rught? I’m just over thinking it. I’ve been very stressed with other issues lately.